# Maths Year 5/6 Spring Multiplication and Division

In the Spring term, it is likely you will begin to think about more formal SATs preparation for your Year 6s. While this revision will be driven by the specific needs of the children in your class, we hope to help by providing a set of SATs-style questions to accompany each Spring term unit: 'Y6 SATs Practice' is an additional 'Teaching & Group Activities' download.

Each unit still has everything you need to teach a set of related skills and concepts for the whole class: 'Teaching & Group Activities' provides a plan for whole-class teaching; a 'Slide Presentation' brings this teaching to life on the IWB. Fully-differentiated adult-led group activities follow, allowing for small-group personalised learning, where you may deal with children's 'Common Misconceptions'. Fluency can be rehearsed with our 'Practice Sheets', or learning checked with the 'Mastery Activity'. 'Extra support' activities enable targeted work with children who are well below ARE.

‘UNIT PLAN’ gives you a text version of all parts of the unit to use in your school planning documentation. ‘DOWNLOAD ALL FILES’ gives you that unit plan plus all of the associated documents. These bulk downloads are only available to Hamilton Friends and School Subscribers.

## Multiples, factors and mental strategies(suggested as 2 days)

### Planning and Activities

Day 1 Teaching
Use the ITP Number grid to highlight multiples, look for the lowest common multiple of 2 and 3, 3 and 4, 3 and 6, 6 and 9. Then find the highest common factor of 32, 16 and 24, then 12, 20 and 32.
Group Activities: T with Y6
Y5 -- Derive lowest common multiples and highest common factors. Investigate finding lowest common multiples.
Y6 -- Play games to practise finding common multiples and factors.

Day 2 Teaching
Use mental strategies to multiply 2-digit numbers by 1-digit numbers. Aim to reach given targets.
Further Teaching with Y6
Write the 0.4 times tables. Use this to multiply 2-digit numbers with 1 decimal place by 1-digit numbers. Check the place value of answers is reasonable.
Group Activities: T with Y6
Use the in-depth problem-solving investigation ‘LCM Squares’ as today’s group activity.
Or, use these activities:
Y5 -- Investigation to practise mentally multiplying 2-digit numbers by 1-digit numbers.
Y6 -- Derive the 0.6, then 2.6 times table. Investigation to practise mentally multiplying numbers with 1 decimal place by 1-digit numbers.

### You Will Need

• ITP: Number grid
• Number cards 2–12
• Common multiples (see resources)
• Common factors activity sheet (see resources)

### Short Mental Workouts

Day 1
Double 2-digit numbers

Day 2
Times table bingo

### Worksheets

Day 1
Y5: Find common multiples and factors of given numbers.
Y6: Find highest common factor and lowest common multiple of sets of numbers.

Day 2
Y5: Mentally multiply 2-digit numbers by 1-digit numbers. Explain strategies.
Y6: Derive the 0.3 times table then related facts.
Mentally multiply 2-digit numbers with 1 decimal place by 1-digit numbers.

### Mastery: Reasoning and Problem-Solving

Y5

• Is the lowest common multiple of 6 and 4 smaller than the highest common factor of 30 and 45?
Write common factors of 24 and 48.
Write common multiples of 3 and 5 up to 60.
Are any numbers in both sets?
• True or false?
There are exactly four 2-digit, common multiples of 3 and 7.
4 and 5 are common factors of all 2-digit multiples of 10.
15 is a factor of 100.
• If 350 ÷ 5 is 70, calculate 350 ÷ 10, 350 ÷ 20 and 350 ÷ 70.
Now try 350 ÷ 2.5.

Y6

• Which pair(s) of numbers under 20 have the largest number of common factors? What is the highest common factor?
Write common multiples of 4 and 6 up to 60. What is the lowest common multiple?
Use this information to find the lowest common multiple of 8 and 12.
• Write out the 0.7 times table up to 12 × 0.7. Use this to help you write the 2.7 times table.

Y5 In-depth investigation: LCM Squares
Children use trial and improvement to find the smallest possible total on a square of lowest common multiples.

Y6 In-depth investigation:
Use the Day 2 group activity for Working at ARE/Working at Greater Depth, supporting children working towards ARE.

### Extra Support

Y5: Mammoth Multiplications
Using known times tables and place value to multiply, e.g. 4 × 3, 4 × 30, 4 × 300

Y6: Factor Hunt
Finding factors of numbers within times tables